The fundamental excitations in superconductors - Bogoliubov quasiparticles - can be either a resource or a liability in superconducting devices: they are what enables photon detection in microwave kinetic inductance detectors, but they are a source of errors in qubits and electron pumps. To improve operation of the latter devices, ways to mitigate quasiparticle effects have been devised; in particular, combining different materials quasiparticles can be trapped where they do no harm and their generation can be impeded. We review recent developments in these mitigation efforts and discuss open questions.
@article{arxiv.2107.09695,
title = {Using materials for quasiparticle engineering},
author = {Gianluigi Catelani and Jukka P. Pekola},
journal= {arXiv preprint arXiv:2107.09695},
year = {2022}
}